(, The Bat, sometimes called The Revenge of the Bat) is an operetta composed by Johann Strauss II to a German libretto by Karl Haffner and Richard Genée, which premiered in 1874. Background The orig
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4c59387e14b8133cbcea857a9ea88b4a00b6889fc4b2607a9f13ef0aeaaa64. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ddecf2f6-287b-407e-b2d1-5aec654156a0.json and https://artists.proofprofile.net/proofs/artist/ddecf2f6-287b-407e-b2d1-5aec654156a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).